Bout Summary

Referee Joe Cortez paused the action at 1:22 into round one to warn both fighters for excessive clinching. Castillo was bleeding from the nose after round one. Hatton's left-eye was swollen after round three. Castillo was warned twice in round three for low blows. Cortez took a point from Castillo for a low blow during the fourth round. At 2:16 into round four, Castillo was hurt badly by a left hook to the body. He turned his back to Hatton and took a knee. The referee reached the count of ten.

HBO boxing analyst Max Kellerman said of the fight, "It seems unfair to take a little credit away (from Hatton) but here it goes. Castillo did look like a shot fighter tonight, like he was showing up just kind of to see what this young guy had and when he saw what he had, he thought "It's too much for me." and packed it in on a body shot". This body shot was revealed to have broken four of Castillo's ribs.